Corningware wrote:
> My friend accidentally left a Corningware casserole dish(white) in
the
> oven at 400 degrees for six hours.
>
> She was roasting vegetables and garlic in olive oil. Needless to say
> the dish is a mess with burnt on stains that cannot be removed by
> scrubbing etc. It was completely black after charred remains of the
> vegetables were scraped off.
>
> I have tried many things but alas this sentimental dish seems to be
> dead. The black and brown stains seem to be painted on.
>
> I can send you a pic. It's pretty ugly.
>
> Can you help?

Perhaps someone will describe my patented ammonia method.